/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/GroupTopology.h
Keeps the structures of topology in place but points the mesh pointers to a new cloned mesh. If the given mesh is not cloned, the topology will no longer be consistent.
void RetargetOnClonedMesh ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) * Mesh )